From Line Geometry To Area Topology
by  © P. Wade, M. Visvalingam and G.H. Kirby
CISRG Discussion Paper Series No 1, University of Hull, 48 pp

 For the sake of posterity, please cite from the published version:
Kirby, G H, Visvalingam, M and Wade, P (1989) "The recognition and Representation of Polygons with Holes" Computer J, 32 (6), 554 - 562.

FIGURES

  1. Representation of the geometry of area objects

  2. The implications of including a map frame

  3. Relating area objects to the primitive regions

  4. Implications of storing the hierarchy of primitive regions rather than of boundaries

  5. Data structure used for holding the geometry and topology of the linework of area boundaries

  6. The naming of primitive regions

PAPER

© Dr Mahes Visvalingam, University of Hull, 2003

Cartographic Information Systems Research Group, University of Hull